Literary usage of Omani rial

Below you will find example usage of this term as found in modern and/or classical literature:

1.Gulf States: Kuwait, Bahrain, Quatar, United Arab Emirates, Oman, Yemen by Editors of JPM Publications (2000)"... and Measures Today's traders operate in a system as comprehensible as anywhere
in the world, and in a straightforward currency, the stable Omani rial. ..."